Distant Horizons - Different Surfaces

This excellent image compilation by Mike Malaska shows the planetary surfaces of Asteroid Itokawa, the Moon, Venus, Mars, Titan, and Earth. So our technology has been in the surface of five planetary bodies besides Earth. Well, not counting Eros (not originally a lander), Comet Tempel 1 (a 'crasher'), and Jupiter (not a surface to land). Why Earth is shown as an ocean? With a 71% global coverage this is the most common surface type of our planet.